Section 39

The Commissioner may, on proof to his or her satisfaction that the presence of any prisoner at any place is required in the interests of justice, or for the purpose of any public inquiry, by writing under the hand of the Commissioner order that the prisoner be taken to that place.

A prisoner taken from a prison pursuant to an order made under this section must, while outside that prison, be kept in any custody that the Commissioner may by writing under the hand of the Commissioner direct, and while in that custody is deemed to be in legal custody.